Add and use IniReader, fix RC again

SabreTools.Library/Readers/IniReader.cs

@@ -0,0 +1,144 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+
+using SabreTools.Library.Data;
+
+namespace SabreTools.Library.Readers
+{
+    public class IniReader : IDisposable
+    {
+        /// <summary>
+        /// Internal stream reader for inputting
+        /// </summary>
+        private StreamReader sr;
+
+        /// <summary>
+        /// Get if at end of stream
+        /// </summary>
+        public bool EndOfStream
+        {
+            get
+            {
+                return sr?.EndOfStream ?? true;
+            }
+        }
+
+        /// <summary>
+        /// Contents of the currently read line as a key value pair
+        /// </summary>
+        public KeyValuePair<string, string>? KeyValuePair { get; private set; } = null;
+
+        /// <summary>
+        /// Contents of the currently read line
+        /// </summary>
+        public string Line { get; private set; } = string.Empty;
+
+        /// <summary>
+        /// Current row type
+        /// </summary>
+        public IniRowType RowType { get; private set; } = IniRowType.None;
+
+        /// <summary>
+        /// Current section being read
+        /// </summary>
+        public string Section { get; private set; } = string.Empty;
+
+        /// <summary>
+        /// Validate that rows are in key=value format
+        /// </summary>
+        public bool ValidateRows { get; set; } = true;
+
+        /// <summary>
+        /// Constructor for reading from a file
+        /// </summary>
+        public IniReader(string filename)
+        {
+            sr = new StreamReader(filename);
+        }
+
+        /// <summary>
+        /// Constructor for reading from a stream
+        /// </summary>
+        public IniReader(Stream stream, Encoding encoding)
+        {
+            sr = new StreamReader(stream, encoding);
+        }
+
+        /// <summary>
+        /// Read the next line in the INI file
+        /// </summary>
+        public bool ReadNextLine()
+        {
+            if (!(sr.BaseStream?.CanRead ?? false) || sr.EndOfStream)
+                return false;
+
+            Line = sr.ReadLine().Trim();
+            ProcessLine();
+            return true;
+        }
+
+        /// <summary>
+        /// Process the current line and extract out values
+        /// </summary>
+        private void ProcessLine()
+        {
+            // Comment
+            if (Line.StartsWith(";"))
+            {
+                KeyValuePair = null;
+                RowType = IniRowType.Comment;
+            }
+
+            // Section
+            else if (Line.StartsWith("[") && Line.EndsWith("]"))
+            {
+                KeyValuePair = null;
+                RowType = IniRowType.SectionHeader;
+                Section = Line.TrimStart('[').TrimEnd(']');
+            }
+
+            // KeyValuePair
+            else if (Line.Contains("="))
+            {
+                // Split the line by '=' for key-value pairs
+                string[] data = Line.Split('=');
+
+                // If the value field contains an '=', we need to put them back in
+                string key = data[0].Trim();
+                string value = string.Join("=", data.Skip(1)).Trim();
+
+                KeyValuePair = new KeyValuePair<string, string>(key, value);
+                RowType = IniRowType.KeyValue;
+            }
+
+            // Empty
+            else if (string.IsNullOrEmpty(Line))
+            {
+                KeyValuePair = null;
+                Line = string.Empty;
+                RowType = IniRowType.None;
+            }
+
+            // Invalid
+            else
+            {
+                KeyValuePair = null;
+                RowType = IniRowType.Invalid;
+
+                if (ValidateRows)
+                    throw new InvalidDataException($"Invalid INI row found, cannot continue: {Line}");
+            }
+        }
+
+        /// <summary>
+        /// Dispose of the reader
+        /// </summary>
+        public void Dispose()
+        {
+            sr.Dispose();
+        }
+    }
+}